BTreeMapBaseKey, ValueGetValueId Method (Key, Byte)

When Value type implements IOptimizedPersistable, you can use this function to get the Id of the persistent object instead of the entire object. Use for performance reasons in certain cases where reading the object isn't desired.

Namespace: VelocityDb.Collection.BTree
Assembly: VelocityDb (in VelocityDb.dll) Version: 11.1.0.0 (11.1)

Syntax

C++

Copy

public ulong GetValueId(
	Key key,
	byte[] comparisonArray
)

Public Function GetValueId ( 
	key As Key,
	comparisonArray As Byte()
) As ULong

public:
unsigned long long GetValueId(
	Key key, 
	array<unsigned char>^ comparisonArray
)

member GetValueId : 
        key : 'Key * 
        comparisonArray : byte[] -> uint64

Parameters

key: Type: Key
Lookup object of type Key where Value must be implementing IOptimizedPersistable
comparisonArray: Type: SystemByte
A byte containing bytes to be compared with.

Return Value

Type: UInt64
The Id of the corresponding value object or 0 if not persistant or not mplementing IOptimizedPersistable

Reference

BTreeMapBaseKey, Value Class

GetValueId Overload

VelocityDb.Collection.BTree Namespace